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NLC's. app for sun angle beneath the horizon?

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#1 skydivephil

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Posted 06 May 2021 - 08:48 AM

Im a keen Noctilcuent Cloud chaser and am aware they seen (according to wikipedia) when the sun is between 6 and 16 degrees beneath the horizon. Id like to know when that is , especially as I plan to travel to Iceland to see the volcano in June and am not sure if the sun will even get that low. 

Are they any apps whereto can plug in you location and time and it will tell you the angle beneath the horizon of the sun?



#2 Jim Davis

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Posted 06 May 2021 - 09:18 AM

Im a keen Noctilcuent Cloud chaser and am aware they seen (according to wikipedia) when the sun is between 6 and 16 degrees beneath the horizon. Id like to know when that is , especially as I plan to travel to Iceland to see the volcano in June and am not sure if the sun will even get that low. 

Are they any apps whereto can plug in you location and time and it will tell you the angle beneath the horizon of the sun?

You can use stellarium. For Reykjavik for mid-June, the sun gets 2.34 degrees below the horizon.


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#3 Tapio

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Posted 06 May 2021 - 09:18 AM

Any star chart program (like Cartes du Ciel, Stellarium, Sky Safari etc) will tell that.

You can see with online Stellarium too:

https://stellarium-web.org/

Alas June is too early - in Reykjavik Sun gets below -6 at end of July.



#4 skydivephil

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Posted 06 May 2021 - 09:38 AM

You can use stellarium. For Reykjavik for mid-June, the sun gets 2.34 degrees below the horizon.

So I search for the sun and pull up its details, which field is it?



#5 Jim Davis

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Posted 06 May 2021 - 10:11 AM

Az/Alt. It should show a negative Altitude.


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#6 skydivephil

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Posted 06 May 2021 - 08:30 PM

Az/Alt. It should show a negative Altitude.

thanks




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